27.08.2013 Views

Libro de Resúmenes / Book of Abstracts (Español/English)

Libro de Resúmenes / Book of Abstracts (Español/English)

Libro de Resúmenes / Book of Abstracts (Español/English)

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

Resumenes 170<br />

Mo<strong>de</strong>lación matemática <strong>de</strong> la cinética viral intracelular<br />

Cruz Vargas De-León<br />

Universidad Autónoma <strong>de</strong> Guerrero, Facultad <strong>de</strong> Matemáticas,<br />

Av. Lázaro Cár<strong>de</strong>nas, S/n, Ciudad Universitaria, C.P. 39000, Guerrero, México.<br />

czvdleon@yahoo.com.mx<br />

Los virus son parásitos intracelulares microscópicos que requieren <strong>de</strong><br />

una célula huésped. El virus es un agente genético que posee un ácido<br />

nucléico que pue<strong>de</strong> ser ADN o ARN, ro<strong>de</strong>ado <strong>de</strong> una envuelta <strong>de</strong> proteína. El<br />

proceso <strong>de</strong> multiplicación viral intracelular incluye la replicación <strong>de</strong>l ácido<br />

nucleico, síntesis y <strong>de</strong>gradación <strong>de</strong> RNA mensajero, síntesis y <strong>de</strong>gradación<br />

<strong>de</strong> proteínas virales, ensamblaje <strong>de</strong> la cápsi<strong>de</strong> y escape <strong>de</strong>l virus <strong>de</strong> la<br />

célula.<br />

En este trabajo analizamos dos mo<strong>de</strong>los matematicos <strong>de</strong> la cinética<br />

intracelular para virus genéricos, <strong>de</strong>sarrollado por Srivastava et al. “[Ver<br />

en: Stochastic vs. <strong>de</strong>terministic Mo<strong>de</strong>ling <strong>of</strong> intracellular viral kinetics”.<br />

(2002). J. Theor. Biol. 218. pp. 309-321] y Zhdanov [Ver en: “Bifurcation in<br />

a generic mo<strong>de</strong>l <strong>of</strong> intracellular viral kinetics”. (2004). J. Phys. A: Math.<br />

Gen. 37 L36-L66].<br />

Los mo<strong>de</strong>los matemáticos están basados en sistemas <strong>de</strong> ecuaciones<br />

diferenciales ordinarias no-lineales. Los sistemas presentan un punto <strong>de</strong><br />

equilibrio trivial y el punto <strong>de</strong> equilibrio <strong>de</strong> producción-viral. Proveemos<br />

resultados <strong>de</strong>l análisis <strong>de</strong> estabilidad.<br />

Se realizan simulaciones numéricas con el paquete Maple, Versión 9. Los<br />

parámetros requeridos para las simulaciones se <strong>de</strong>ducen <strong>de</strong> la literatura.<br />

Nuestro estudio teórico revela que la tasa <strong>de</strong> multiplicación viral <strong>de</strong>pen<strong>de</strong> <strong>de</strong><br />

la cinética <strong>de</strong> reacciones bioquímicas.<br />

Palabras Claves: Cinética viral intracelular, EDO, Estabilidad Local, Equilibrio<br />

<strong>de</strong> producción-viral, Simulaciones numéricas<br />

Mathematical mo<strong>de</strong>ling <strong>of</strong> intracellular viral kinetics<br />

Viruses are submicroscopic obligate intracellular parasites that require a host<br />

cell. At their simplest, they consist <strong>of</strong> a nucleic acid genome, which may be<br />

DNA or RNA, surroun<strong>de</strong>d by a protective shell <strong>of</strong> repeating protein subunits.<br />

The intracellular multiplication <strong>of</strong> virus inclu<strong>de</strong> viral genome replication,<br />

mRNA synthesis and <strong>de</strong>gradation, protein synthesis and <strong>de</strong>gradation, capsid<br />

assembly and virion release from a cell.<br />

In this paper we show two mathematical mo<strong>de</strong>ls <strong>of</strong> the intracellular kinetics<br />

<strong>of</strong> a generic virus, <strong>de</strong>veloped by Srivastava et al. [See also: “Stochastic vs.<br />

<strong>de</strong>terministic Mo<strong>de</strong>ling <strong>of</strong> intracellular viral kinetics”. (2002). J. Theor. Biol.<br />

218 pp. 309-321] and Zhdanov [See also: “Bifurcation in a generic mo<strong>de</strong>l <strong>of</strong><br />

intracellular viral kinetics”. (2004). J. Phys. A: Math. Gen. 37 L36-L66].<br />

The mo<strong>de</strong>ls are represented by systems <strong>of</strong> nonlinear ordinary differential<br />

equations (ODEs). Equilibria <strong>of</strong> the systems are given by trivial virus<br />

equilibrium and the virus production equilibrium. We then study the local<br />

stability <strong>of</strong> these equilibria.

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!